feat(webui): Trading signal panel, Predict Future Now, dark theme & bug fixes#309
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…bug fixes
## Summary
Major improvements to the Kronos Web UI focusing on usability, visual clarity,
and a new real-time trading signal analysis panel.
## New Features
### Predict Future Now
- Added a dedicated 'Predict Future Now' button that uses the most recent
400 candles (lookback) to forecast the next 120 periods beyond the last
data point — i.e., a true future forecast, not a backtest.
- Future timestamps are generated programmatically via pd.date_range so
the model always forecasts into the uncharted future.
- No 'actual data' orange trace is shown in this mode (the future hasn't
happened yet).
### Trading Signal Analysis Panel
- After every prediction a full trading signal panel is displayed below the
chart, automatically computed from the prediction output.
- Signal categories: STRONG BUY / BUY / NEUTRAL / CAUTION / DO NOT BUY,
each with a distinct color scheme.
- Panel includes six metric cards: Current Price, Predicted Final Price (%),
Predicted High, Predicted Low, Predicted Mean, Support / Resistance.
- Trajectory timeline: Now → [Nd: +X%] → [Nd: +X%] → [End: +X%].
- Operations panel: Entry, Stop-Loss (-3%), Target 1, Target 2, Timeframe.
### Dark Theme & Chart Color Overhaul
- Chart background switched to plotly_dark with dark paper/plot bg.
- Historical candles: gray (#78909C / #546E7A) — neutral context.
- Prediction candles: blue (#1E88E5 / #1565C0) — clearly distinguishable.
- Actual/backtest candles: orange (#F57C00 / #BF360C) — easy comparison.
### Windows Launcher (start.ps1)
- One-command launcher: auto-detects the Python installation with CUDA
support by iterating all python.exe in PATH and testing
torch.cuda.is_available().
- Falls back to CPU if no CUDA Python is found.
- Deactivates any active venv to prevent using the wrong Python.
- Generates a random port (10000-60000), checks availability via
Get-NetTCPConnection, then auto-opens the browser after 3 s.
- Supports -SkipInstall flag to skip pip install on repeat launches.
### Data Download Utility (download_data.py)
- CLI utility to download market data (crypto, stocks, forex) via yfinance
and save to the Kronos data/ directory in the expected CSV format.
- Supports all yfinance intervals (1m, 5m, 15m, 1h, 4h, 1d, 1wk, 1mo).
- Usage: python download_data.py BTC-USD --interval 4h --period 2y
## Bug Fixes
### actual_data showing wrong price range in predict-future mode (critical)
- Root cause: the else branch in the actual_data section always fetched
df.iloc[0:lookback+pred_len] regardless of mode, so in predict-future
mode (no start_date) it served the very first candles in the file
(e.g. 2024 XRP at ~.50 instead of current ~.30), rendering an
orange trace in a completely wrong price band.
- Fix: actual_data is now mode-aware:
- predict_future=True → actual_df = None (no trace)
- start_date provided → actual_df from time_range_df[lookback:lookback+pred_len]
- neither → no actual data
### historical_start_idx wrong in predict-future mode
- Root cause: historical_start_idx defaulted to 0, so the chart showed
candles from the very beginning of the file (years-old data) as the
'historical' context window instead of the last 400 candles.
- Fix: when predict_future=True, historical_start_idx = len(df) - lookback.
## Localization
- All user-visible text translated from Chinese/Portuguese to English.
- html lang attribute updated to 'en'.
- Date formatting locale updated to en-US.
- .gitignore updated to exclude data/ and webui/prediction_results/ (runtime artifacts).
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Summary
Major improvements to the Kronos Web UI — new trading signal analysis panel, a dedicated future-forecast mode, chart color overhaul, Windows launcher, data download utility, and two critical bug fixes.
New Features
🎯 Predict Future Now
📊 Trading Signal Analysis Panel
🎨 Dark Theme & Chart Color Overhaul
🪟 Windows Launcher (\start.ps1)
📥 Data Download Utility (\download_data.py)
Bug Fixes
\�ctual_data\ rendering wrong price range in predict-future mode (critical)
\historical_start_idx\ showing stale data in predict-future mode